11.24: Two wave pulses travc hg4sqlc )t8w6as1 7rj w4u7nel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one ol6rw8hw4c1 tnjguq) 7s a74 csf the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a plastisuib)rcy r(13c block. Which pair of 1y r urib(3)scstatements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downwau a, g o0cd45/eb)xyqay1 +kkfrd through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an angb4ey+ x,yf5aadc okku0 1q)g/le $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection oct y.dkj3 +7hmmcurs whenever light is incident on

  05.18: A student hold a hand mirror to ) .q gk5cz,mafobserve the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 fza, q.c)k gmf5t in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray c/mk ssn-yaf,ie z4 -3qhanges direction when it enters a new material. mk4--,fyez3s i /s qanWhich one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm i gvficxr msm* o23-) p2sq4n8(e*knt hn a transparent materr*p2qhgo 3tse*s(n28mifvx n4) kcm-ial. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed5tsu haz b-c-dl4 kjg+ f7zn.5 and its:

  00.01: As a wave moves from one medium to a second 6; qy j)s 3)dlkre6)wio f9b3cwjpp9gmedium with a different index of refraction which o)jpsl jqw36)p9 yrfcoe k9;6 3)dwbigf the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning forkwizykgo7 1 d83 of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes fi z3dwygk87o1 rom air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming ps4i 8dxfm-k. mool emits a sound wave thd x84.s ki-mmfat travels toward the surface of the water. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of v4bny7npd l1qb,)fowx8j q (8white light strikes a rectangular glass block with an angf8(1xd j b7nqlovnw,84b pqy)le of incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is d0p ao ;op8z((z th-gfdirected toward a point P on a boundary as shown to the right. Which segment ;h(8 (zogdz0o t pa-fpbest represents the refracted ray?

  98.17: Which diagram best represents wh)zp,ic0hi r* ch,xj7fat happens to a ray of light entering air from waterx*h) ,h,i0f7j pi czrc? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which tym cwh,+68ffihe angle f ,86icwmhy+fof refraction is:

  95.12: The principle underlying fibe)s msdz +/sq2 h5eyl5nr optics is:

  98.36: The critical angle in a trap 5uv 4xregv .-cjs49bnsparent substance surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X wmj291muiyj6bwksf zx8h n/(4 ith an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If thn 8b 9m2u xj1wijf/k(6hs4zmye speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass b+acozr ft+/)u n;a8h8 tolt/q3o x1nm y observing the critical angle of the light in each ta3u1ln)fo8 t om/atc+h8+ /q o; rznxmaterial. Glass with an index of refraction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air i 4 -5l2)2/c; +fno rzhddrvbdhe ;bhkanto a clear material. When the light makes an angle of incidence equal t nr4c-bdk ;r/o2ehdha+d2 )bf 5 l;hvzo $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a material of index of reo,p(2szdj2 vk fraction n. The laser beam emerges from the material and hits 2,zposv2jd k(a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 tvuh ib1.9jfrnzu 891go medium 3 as shown in the accompanying figure. Wfvi1jz9 .u91nu8hrgb hat is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1um4w.ysew3 )g to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and wgws4eu.3) ym n3?

  97.24: The accompanying diagram shows the3z+rqqca;9/nj.lz 8nor* oepd kr 1 2a* pqk/l path that a light ray takes passing through three transparent materials. The indices of refract jpl*d 3ern1*q;+olz 8r2pa zq/k.rqkn9/o caion in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monho5a)qy*8 dh1 8md; n xsy(lohochromatic light ray travelingah ;ynymh)o5(8dloxhs8d1 *q through three media.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling lny /3z3tsc yr9 j3p4shy7. qkin glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the surface h tu9igh ;p :im,;+zqwexll tl*z0u,1of a rectangular block of glass at an al q;hmil 9lz,1;higu+eutw* x,p: z t0ngle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is transmitted f 8 geccjzs;dg45yj,f*vu5jz.m)wpn ( rom air into a piece of glass. Which one of the labeled arrowszgc) ; w5n(j.smp5u cejgvy ,*84dfzj best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic ligh j;d-dh:kjyw2t enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 an dh:y-;jw2d jkd it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?